Home / 20,695.36-31,052.16-11,810.32

Finding the Fourth Proportional to 20,695.36, 31,052.16 and 11,810.32

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Solution

The fourth proportional to 20,695.36, 31,052.16 and 11,810.32 is: 17,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.36 : 31,052.16 = 11,810.32 : x
  2. Step 2: Convert to fraction form
    20,695.36/31,052.16 = 11,810.32/x
  3. Step 3: Cross multiply
    20,695.36x = 31,052.16 × 11,810.32
  4. Step 4: Simplify right side
    20,695.36x = 366,735,946.29
  5. Step 5: Solve for x
    x = 366,735,946.29/20,695.36
  6. Step 6: Final answer
    x = 17,720.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.